Answer:
a. cross-beds
Explanation:
Lithified sand dunes are formed when marine, or in this case, aeolian sand dunes become compacted or hardened. Deposition of minerals on these hardened surfaces creates layers on inclined surfaces. These layers get stacked over time, which creates interesting patterns and, as this stacking occurs on tilted surfaces, they form cross patterns. This entire process is called cross-bedding.
Ripple marks are almost uniform patterns usually forming in one direction and plane, which cannot form cross-patterns.
Mud cracks form when a muddy sediment dries up, leaving almost hexagonal cracks behind, a very different type of pattern.
Graded beds are the systematic change in grain size, usually arranging with coarses sediments at the base, and progressively finer grains at the surface. This also cannot form cross patterns.
Answer:
A. convergent
Explanation:
"Tectonic plates" are very important when it comes to studying the Earth. It moves in different directions every year. There are particularly three types of movements or plate boundaries<em> (convergent, divergent and transform)</em>.
When the tectonic plates move away from each other, it is called <em>"divergent."</em> When they move towards each other, it is called<em> "convergent,"</em> just like what the teacher demonstrated above. <u><em>Pushing the two pieces of clay together </em></u>means<u> she's showing the movement of the tectonic plates towards each other. </u>When the plates slide past each other, it is called "transform."
The term ring of fire was used to describe an annular solar eclipse (an event not related to earthquakes) that happened last February 26, 2017 (a Sunday). An annular solar eclipse happens when the moon passes between the Earth and the Sun but only covers the sun's center, (as opposed to a total solar eclipse in which the entire sun is covered) creating a "ring of fire".
Hope my answer helps.
Coup d'etat is the right answer
Answer:
The Pacific Ocean, the body of salt water extending from the Antarctic region in the south to the Arctic in the north and lying between the continents of Asia and Australia on the west and North and South America on the east.
TheAtlantic Ocean, the body of salt water covering approximately one-fifth of Earth's surface and separating the continents of Europe and Africa to the east from those of North and South America to the west.
